Burner.



lUNrrnn STATES p AT NATIIANIEL II. BLEDSOE, OF FORT WAYNE, INDIANA.

BURNER.

` SPECIFICATION forming part of Letters Patent No. 643,105, datedFebruary 13, 1900.

Application iilecl March 11, 1899. Serial No. 708,619. (No model.)

To all whom it may concern.-

Be it known that LNATHANIEL H. BLEDsoE,

' enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, whichform part of this specification.

My invention relates to improvements in burners for petroleum or otherfuel-oil.

The principal object of my present invention is to provide an improvedburner for fueloils, adapted to be employed with safety and conveniencein sad-irons, so constructed and arranged that the pressure or supply ofthe vapor generated from the fuel-oils is regulated and controlled atits entrance to the burner and is provided with a vapor-chamber in whichthe graphite, paraflin, or other insoluble substance is deposited andretained instead of passing through the contracted outlet-port andcontinually clogging the same, and therefore requiring a needle-valve tokeep the said port clear while in use.

My invention consists of a chambered casting in which are detachablymounted one end of the supply-pipe, a hollow inlet-valve, ascrew-threaded nipple having an outlet-port communicating with thechamber in which the said 1inlet-valve is arranged, and a screwplugclosing the chamber in which the said nipple is arranged, and a pendentcup or open-topped receptacle fixed to the lower face of my invention.

The novel features of myinvention are the manner and means forcontrolling or regulating the pressure of the fuel-vapor in the burner,means for relieving the fuel-vapor of its paraffin or graphite or otherinsoluble ingredients, and the means for conveniently cleansing the saidburner. v

In the accompanying drawings, in which similar reference-numeralsindicate like parts throughout the several views, Figure l is aperspective view of my improvement, showing the arrangement of its partsrelative to the burner and the fuel-supply pipe. Fig. 2 is alongitudinal central section of Fig. l,show

ving the internal construction thereof with the regulator-valve open,also showing a portion of the supply-pipe and heater in longitudinalsection. Fig. 3 is also a longitudinal section of my invention, showingthe inlet or supply valve closed. Fig. 4 is a similar view to Fig. 3,showing a modified form of my inlet-valve seat. Figs. 5 and 6 areenlarged detail views, in longitudinal section,of the inlet-valve,showing slightly-modified forms. Fig. 7 is a detail of the hollowscrew-threaded nipple by which the fuel-vapor is discharged into theburner. Fig. 8 is a modified form of this nipple.

The casting l, of any desired contour, dimensions, and material, has twochambered portions 2 and 3, connected by a conduit 4 of reduced diameterand arranged one above the other, as shown, and is provided with anoverhanging shield and a pendent liquid-receptacle. The portion 2 hastwo screw-threaded openings in approximate longitudinal alinement, whoseinner ends are connected by an inlet port or conduit 5, Fig. 2. In oneof the screw-threaded openings is mounted by a screw-threaded connectiona fuel-su pply pipe 6, Whose outer end is connected in any proper mannerto a proper source of supply. (Not shown.) In the other one of saidopenings is arranged by a screw-threaded connection a hollow screw-plugor inlet-valve 7, whose inner end is adapted to tightly it a proper seatat the adjacent end of the said inlet-port 5. I preferably secure such avapor-tight. fit by providing a conical seat and making the inner end ofsaid valve 7 correspondingly beveled, as shown in Figs'. 2 and 6. Thisvalve 7 has a central chamber 8, which may be confined to the inner endof said valve, `as shown in Figs. 2, 3, and 5, or it may be eX- tendedto the outer end of said valve, as shown in Figs. 4 and 6, and have itsouter end closed by a proper screw 9, and whose inner end communicateswith the said port 5 by means of the port l0. In this chamber 8 isarranged a proper quantity of asbestos or other proper substance,adapted to receive and retain the graphite or other insoluble matter inthe fuel-vapor which isA generated in the said pipe 6 from the fuel-oiltherein. The portion 2 of said casting projects at each end a properdistance beyond the ends of the IOO said portion 3 and has itscylindrical outer l ing therein.

end externally screw-threaded for the internally-screw-threaded cap l1,Whose outer closed end has a central opening for the said valve 7. Therear endof the said portion 2 has opposite lateral apertured ears 12 forsecuring my improvement in position and has an integral horizontal oroverhanging plate 13 forthepurposehereinafterdescribed. Adjacent to theinner end of the said portion 3, properly separated therefrom, isarranged the burner 14, consisting of a metallic tube having a series ofradial pcrforations for the escape of the fuel-vapor therefrom. Theportion 3 has a vapor-chamber 15, communicating with the said chamber ofthe valve 7 by means of the said conduit 4 and has in its outer end ascrew 1G, which forms a vaportight plug. In the inner end of thischamber 15 is mounted a screw-threaded plug 17, whose outer reduced end18 snugly fits the correspondiugly-reduced inner end of said chamber 15,Fig. 2. This screw-plug 17 has a contracted longitudinal central opening19, which forms an outlet-port for the burner.

By the above described construction a proper air-chamber 2O is formedbetween the burner 14 and the said eduction-port 19. Directly below thisair-chamber 2O is arranged a shallow cup-like plate or receptacle 21,which is preferably integral with the said casting 1 or rigidly xedthereto for the purpose presently to be described.

In Fig. 8 is shown a modilied form of the said screw-plug 17, whichconsists of three integral parts-an external projecting portion 22,adapted to be seized by a proper operating-tool, a central portion 23,adapted to close the outer end,of the said chamber 15 by ascrew-threaded connection, and an inner reduced portion having its freeconical end adjacent to a proper eduction-port 24 in the body of thesaid casting and leaving an annular space 25 in said chamber 15 for thefree passage of the vapor from the inlet port or conduit 4.

The operation of my invention thus described is obvious, and, brieiiystated, is as follows: When it is desired to light my improved burner,the operator withdraws the inlet-valve 7 from its seat over theinlet-port 5 by rotating the same, thereby admitting a small quantity ofoil to the said receptacle 21 from the supply-pipe 6 through the saidconduit 4, chamber 15, and port 19 by gravity. The said inlet-valve isthen returned toits seat, thus shutting off the oil-supply. The oil inthe receptacle 21 is then ignited, the Hanle from which fills the saidair-chamber 2O and heats the pipe 6, thereby converting its liquidcontents into a fuel-vapor. The

operator now opens the inlet-valve 7 sufficiently to permit the saidvapor to freely enter the valve-chamber 8, the conduit 4, the chamber15, and thence through the port 19 to the interior of the burner-tube14, from whence itis fed to the iiame through the open- It is obviousthat when the heated vapor from the supply-pipe enters the uppervalve-chambers it will be projected against the asbestos in the chamber8, and the insolubleingredients, like paraffin, will be retainedin theasbestos, which otherwise would pass downward through the conduit 4 andgradually clog the outlet-port 19 in the screwplug 17.

When it is desired to clean or clear my improvement of obstructingaccumulation, it can readily and conveniently be done as follows: Thevalve 7 can be removed from its chamber by unscrewing it, and access tothe interior chamber 8 thereof is afforded in the construction shown inFig. 4 by removing the screw 9 therein, whereby the port 10 can bevcleaned and the asbestos contents be renewed at pleasure. To clean theoutlet vapor-port 19, for which a needle-valve is commonly employed, thescrew 16 is removed, when by means of a screw-driver in the .diametricslot in the head of the screw-plug 17 the plug 17 can readily be removedand cleaned at pleasure. Before removing the said plug 17 for thepurpose of cleaning the same the operator closes the valve 7 by forcingit to its seat, thereby preventing any escape of the fuel-vapor. By theuse of this plug the necessity of the usual needle-valve is obviated,which is very`desirable, for the reason that the needle is veryfrequently broken off in the port, causing the operator great troubleand inconvenience and completely deranging the burner.

It is thus obvious that in my improved burner the pressure or supply ofthe fuel-vapor can be conveniently and positively regulated when itleaves the supply-pipe and enters the burner, that the asbestos-chamberin the inlet-valve obviates the necessity of a needle-valve for theoutlet vapor-port, and that all the operative parts are convenientlyremovable and accessible.

The shield protects overhanging parts from the heat and serves to directthe blaze to the said tube 6.

Having thus described my invention and the manner of employing the same,what I desire to secure by Letters Patent is- 1. The combination of aburner-casting having a iuid -receptacle and connecting chambers asshown, a fuel-supply pipe 6 and an inlet-valve 7 ,mountedin longitudinalalinement in the upper chamber, the inlet-valve 7 being adapted to closethe inlet-port of the supply-pipe,and having an asbestos-chamber in itsinner end as described; and the lower chamber provided with a removablescrewplug having an outlet-port leading to thedcombustion-chamber, andremovable means for closing the outer end of said lower chamber.

2. In a burner of the class specified, the combination of a chamberedcasting having a f nel-supply pipe fixed therein,and provided with ahuid-receptacle as described; the upper valve-chamber in alinement withthe said IOO IIO

supply-pipe, and a lower chamber communicating with both thevalve-chamber and the combustion chamber as shown; a valve mounted insaid upper valve-chamber, and provided upon its inner end with anasbestos-chamber for the purpose described: and

removable means for closing said lower chamber for the purpose ofaffording access thereto. 3. In a chamber of a burner of the classspecified, an inlet-valve 7 adapted to regulate the fuel pressure orsupply at the inlet-port, and provided With an asbestos-chamber inlongitudinal alinement with the inlet-port of the pipe 6 for the purposedescribed.

4. In a burner of the class specified, the burner-casting provided Withthe chamber 15, and the screw-plug 17 placed in said cham- NATHANIEL H.BLEDSOE.

Witnesses:

ADELAIDE KEARNS, ADA CRAWFORD.

